nagnuti

1. (nagnuti se) to lean; to bend over
   Nagnula se preko stola da ga poljubi. — She leaned across the table to kiss him.
   Nemoj da se nagneš kroz prozor! — Don't lean out of the window!
2. (+ acc.) to tilt; to tip
   Nagnuo je glavu i nasmešio se. — He tilted his head and smiled.
   Nagni flašu malo, ostalo je još soka. — Tip the bottle a bit, there's still some juice left.
3. formal (+ infinitive) to start suddenly; to rush
   Kad je čuo pucanj, nagnuo je bežati. — When he heard the shot, he broke into a run.

The imperfective is naginjati; naginjati ka čemu also means "to tend towards something".